The effect of selenium application to the soil on the sulphur and phosphorus content in potatoes
2008
Zemkova, L.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin | Hlusek, J.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin | Losak, T.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin | Juzl, M.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Pestovani, Slechteni Rostlin a Rostlinolekarstvi | Elzner, P.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Pestovani, Slechteni Rostlin a Rostlinolekarstvi
Increasing doses of selenium were applied to the soil (0, 12, 24, 48 and 72 kg Se / ha) in a small-plot trial with potatoes in order to study the effect of Se fertilization on Se, P and S concentrations in raw tubers and aerial parts. The trials were conducted in two localities with the semi-early variety Ditta. Se was applied to the soil in the form of sodium selenite before planting the potatoes. There was a significant and positive correlation between the applied Se dose and its concentration in both tubers and aerial parts (r=0.885 and r=0.908, respectively). On the contrary, S concentrations in aerial parts decreased with increasing Se doses (r=−0.872, P less than 0.05). In both localities S concentration in tubers was similar (0.16-0.18%) and the effect of Se was not significant. P concentrations in both plant parts did not change significantly after Se application up to 48 kg/ ha. Nevertheless, they decreased significantly in both tubers and aerial parts when 72 kg Se / ha was applied.
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